vue中同一个方法中发送axios请求获取参数值不同

toUpdateCar() {
	if (this.checked.length != 1) {
		alert("只能选择一项信息进行修改！")
		$("#update").attr("data-toggle", "");
	} else {
		$("#update").attr("data-toggle", "modal");
		$("#carNo").attr("disabled", "disabled");
		axios.get("http://localhost:8080/carInfo?cid=" + this.checked[0])
			.then(response => {
				this.car.id = response.data.car.id;
				this.car.carNo = response.data.car.carNo;
				this.car.carBrand = response.data.car.carBrand;
				this.car.carModel = response.data.car.carModel;
				console.log("carBrand1="+this.car.carBrand);
			})
		console.log("carBrand2="+this.car.carBrand);
		this.checked = [];
	}
},

当定义的变量在axios请求中时，可以获取值，而在axios外再次输出该变量则无法获取

• 原因：变量在axios响应中获取值，但axios中取得的响应值没有马上赋值给定义的变量，所以第二次输出定义的变量时，变量还没有被响应值赋值，所以输出的值为空

• 解决办法：

  在axios中声明一个方法，在该方法中调用变量

  toUpdateCar() {
  	if (this.checked.length != 1) {
  		alert("只能选择一项信息进行修改！")
  		$("#update").attr("data-toggle", "");
  	} else {
  		$("#update").attr("data-toggle", "modal");
  		$("#carNo").attr("disabled", "disabled");
  		axios.get("http://localhost:8080/carInfo?cid=" + this.checked[0])
  			.then(response => {
  				this.car.id = response.data.car.id;
  				this.car.carNo = response.data.car.carNo;
  				this.car.carBrand = response.data.car.carBrand;
  				this.updateModelList();
  		})
  	this.checked = [];
  	}
  },
  updateModelList(){
  	axios.get("http://localhost:8080/findModelByBid?bid="+this.car.carBrand)
  		.then(response=>{
  			this.carModelList = response.data.carModelList;
  		})
  	},